Adjustable safety bar



FIG. 1 is a perspective view of an adjustable safety bar showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a top view thereof;

The bottom view is a mirror image of the top view;

FIG. 5 is a right side view thereof; and,

FIG. 6 is a left side view thereof. 

The ornamental design for an adjustable safety bar, as shown and described. 